This is the new Syma Double Horse 9086 2 CH Co-Axial Rotor RTR Electric RC Helicopter. This RC helicopter includes a co-axial rotor (double rotor). This style of rotor eliminates rotor torque making it very steady in flight so its a bit more more forgiving. The 9086 Double Horse is almost 2 feet long, has the easy to fly controls found in the new generation of RC helicopters and for maximum crash resistance includes carbon fiber and aluminum parts usually only found in the more expensive helicopters. It is controlled via a two channel transmitter and has adjustable trim. The radio controlled helicopter includes all accessories needed such as fast charger and 7.2 volt battery (transmitter requires 8 x AA batteries - not supplied). The minimal amount of practice is needed to fly this RC helicopter is great, especially if your a beginner. This RC heli is suitable for large indoor areas and outdoor flight in zero wind conditions. Simply remove from the box, install charged batteries, and your ready to go! The high capacity NI-MH battery will give 20 minutes (approx) of flight time.